A paper on novel organic hole-transporting materials for perovskite solar cells has been published in ACS Energy Letters.

Fluorene-Terminated π-Conjugated Spiro-Type Hole Transport Materials for Perovskite Solar Cells

Mengde Zhai, Kaihuai Du, Chengyang Liu, Cheng Chen, Guixiang Li, Haoxin Wang, Ziyang Xia, Jinman Yang, Hui Xu, Aili Wang*, Toshinori Matsushima, Zhanglin Guo, Meng Li, Antonio Abate, Paul J. Dyson, Mohammad Khaja Nazeeruddin, Ming Cheng*